<template>
  <div>
    <div class='search'>
        <input 
          class="search-input" 
          type="text" 
          placeholder="输入城市名或拼音"
          v-model="keyword"
        >
    </div>
    <div class="search-content" ref='search'  v-show="keyword">
        <ul>
            <li 
              class="search-item border-bottom"
              v-for="item of list" 
              :key="item.id"
               @click="handleCityClick(item.name)"
            >
                {{item.name}}
            </li>
            <li class="search-item border-bottom" v-show="haslist">
               没有找到匹配数据
            </li>
        </ul>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
    name:'CitySearch',
    props:{
        cities:Object
    },
    data(){
        return{
            keyword:'',
            list:[],
            timer:null
        }
    },
    computed:{
        haslist(){
            return !this.list.length
        },
    },
     methods:{
        handleCityClick(city){
            // this.$store.commit('changeCity',city);
            this.changeCity(city);//在设置mapMutations的情况下可以这样写
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])

    },
    watch:{
        keyword(){
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list=[];
                return;
            }
            this.timer=setTimeout(()=>{
                const result=[];
                for(let i in this.cities){
                    this.cities[i].forEach((item)=>{
                        if(item.spell.indexOf(this.keyword)>-1||item.name.indexOf(this.keyword)>-1){
                            result.push(item)
                        }
                    })
                }
                this.list=result
            },100)
        }
    },
     mounted(){
        this.scroll=new BScroll(this.$refs.search)
    },
}
</script>

<style scoped>
.search{
    height:0.72rem;
    background:#00bcd4;
    padding:0 0.1rem
}
.search-input{
    box-sizing: border-box;
    width:100%;
    height:0.62rem;
    line-height: 0.62rem;
    text-align: center;
    border-radius: 0.06rem;
    color:#666;
    padding: 0 0.1rem;
}
.search-content{
    position: absolute;
    top:1.58rem;
    left: 0;
    right: 0;
    bottom:0;
    overflow: hidden;
    background: #eee;
    z-index:1;
}
.search-item{
    line-height: 0.62rem;
    padding-left: 0.2rem;
    color:#666;
    background: #fff;
}
</style>